How do I tell if my 96 i30 has electric suspension I'm trying to replace my power steering pump

if it is electric power steering , the electric motor is not working
if it is belt driven it could be a belt slipping/missing
check also for fluid in the reservoir

have an inspection done on the steering and front end suspension
loose /worn ball joints steering end joints , wheel alignment and faulty tyres will give you this indication
The power steering pump does nothing more that provide pressure into the steering box/rack to assist with the steering
it may be that the steering is to sensitive at speed and most systems compensate by having less power assist at speed
take it to a steering specialist accredited shop as the control valves may need replacing or adjusting

How about replacing the steering rack

I doubt any of the pumps were the problem

How about checking for worn suspension parts
as well

Here's a link on how to replace your power steering pump,you can join A.Z site for free and use their repair guides like I do,on the left of the page is link to bleeding it. Repair Guides Power Steering Pump Removal Installation AutoZone com

Bearings bad on power steering pump or faulty belt most likely culprits.

power stEERING PUMP IS OUT OR CHECK UR POWER STEERING BELT

Hopfully this will be ALL you need Besides Pulley REMOVAL TOOL It can be Rented @ AutoZONE

REMOVAL

1. Remove drive belt.
2. Raise vehicle on hoist. WARNING: TURN AIR SUSPENSION SWITCH (LOCATED IN LUGGAGE COMPARTMENT) OFF TO PREVENT VEHICLE DAMAGE OR PERSONAL INJURY.
3. Remove power steering pressure hose bracket.
4. Disconnect electrical connector at power steering control valve actuator.
   1. Install Steering Pump Pulley Remover T69L-10300-B on the pulley hub. CAUTION: Do not apply in-and-out pressure on the power steering pump shaft. Pressure will damage the internal thrust areas.
   2. Hold the small hex-head and rotate the tool nut counterclockwise to remove the power steering pump pulley.
   3. Disconnect power steering pressure hose at power steering pump and drain fluid into a container.
   4. Disconnect power steering return hose at power steering pump and drain fluid into a container.
   5. Remove four retaining bolts and power steering pump and power steering pump pulley assembly.
   6. Remove power steering pressure switch from pump.
   INSTALLATION
   
   1. Position the power steering pump on the mounting bosses of engine block and install the bolts at the side of the power steering pump. Tighten to 20-30 Nm (15-22 ft. lbs.).
   2. Connect the power steering reservoir pump hose to the power steering pump and reposition the hose clamp to power steering pump inlet fitting.
   3. Replace power steering pressure hose O-ring.
   4. Install the power steering pressure hose to the power steering pump fitting. Tighten the tube nut with a tube nut wrench rather than with an open-end wrench. Tighten to 34-46 Nm (26-33 ft. lbs.). NOTE: Swivel or end play of the power steering pressure hose end is normal and does not indicate a loose fitting.
   5. Place the power steering pump pulley on the power steering pump shaft and install Power Steering Pump Pulley Replacer T91P-3A733-A. The small diameter threads on the tool should be engaged in the power steering pump shaft. CAUTION: Do not apply in and out pressure on the shaft. Pressure will damage the internal rotating group.
   6. Hold the small hex-head and rotate the tool nut clockwise to install the power steering pump pulley on the shaft. CAUTION: Do not apply in and out pressure on the shaft. Pressure will damage the internal rotating group. NOTE: The power steering pump pulley face must be flush within 0.25 mm (0.010 inch) of the end of the pump shaft.
   7. Remove the Power Steering Pump Pulley Replacer T91P-3A733-A.
   8. Remove the shipping tube nut from power steering pump housing prior to installation.
   9. Connect electrical connector to power steering control valve actuator.
   1. Install power steering pressure hose bracket.
   1. Lower the vehicle.
   2. If equipped, turn the air suspension ON.
   3. Install drive belt on the power steering pump pulley.
   4. Fill the power steering pump reservoir with Power Steering Fluid Motorcraft MERCON(r) ATF.

Try having the fluid changed and the filter in the powersteering pump changed and that should get rid of the problem. Please rate if this helped. If the fluid is smelly and brown it needs to be flused and use lucas power steering fluid to fill it with, if it does not help then you will have to pressure test the pump output and electric control valve to see if it's failing, if not then you have a rack and pinion problem and will need to be tested to see if a clyinder is bypassing.

NOTE: The following procedure requires the use of the GM Puller tool No. J–29785–A (1985–92), Puller J–25034–B (1993–96) or equivalent, and the GM Pulley Installer tool No. J–25033–B or equivalent.

1. Disconnect the negative battery cable for safety.
2. For 1996 vehicles, remove the air cleaner assembly for access.
3. For 1993–96 vehicles, remove the hood latch and the upper fan shroud.
4. Release tension and remove the drive belt. For details, please refer to Section 1 of this manual.
5. Remove the power steering pump pulley using a suitable puller tool.
6. Remove the power steering pump retaining bolts, then reposition the pump as necessary for access to the hoses.
7. Position a fluid catch pan under the power steering pump.
8. Remove the hoses from the power steering pump and drain the excess fluid into the catch pan.
9. WARNING
   Be sure to cap all openings in the pump hydraulic system to prevent excessive fluid spillage and the possibility of system contamination.
   
10. Remove the power steering pump from the vehicle. To install:
    
11. Position the pump to the vehicle, then uncap and connect the pump hoses.
12. Install the steering pump to the retaining bracket, then secure using the retaining bolts. Tighten the power steering pump-to-bracket bolts to 37 ft. lbs. (50 Nm). For 1996 vehicles, tighten the nut to 30 ft. lbs. (41 Nm). NOTE: On early-model vehicles where the drive belt is tensioned by pivoting the power steering pump assembly, do NOT fully tighten the mounting bolts at this time, since you will just have to loosen them again for belt installation and adjustment.
    
13. Install the pump pulley using the GM Pulley Installer tool No. J–25033–B or equivalent. Press the drive pulley onto the power steering pump.
14. Hand-tighten the pivot bolt, the adjusting bolt and the washer.
15. Install the drive belt. On early-model vehicles so equipped, properly adjust the belt tension. For details on belt installation and tension adjustment, please refer to Section 1 of this manual.
16. For 1993–96 vehicles install the upper fan shroud and the hood latch assembly.
17. For 1996 vehicles, install the air cleaner assembly.
18. Connect the negative battery cable.
19. Refill the power steering reservoir and bleed the power steering system.
20. Remove the jackstands and carefully lower the vehicle.
21. Road test the vehicle, then check and top-off the power steering fluid.

Fig. 3: Removing the power steering pump pulley — 1985–92 vehicles


Email me at [email protected] for an engine picture breakdown.

sounds more like the rack and pinion unit has an internal problem